Seiko Cal. 0731 - 404

This Automatic model from 1977 features a 35mm PVD Black case. It features a Silver dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-15ae4287bb95]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1977

Related Models

• Seiko 4535-806
• Seiko 4591-889
• Seiko 6314-674
• Seiko 3840-456
• Seiko 0734-469
• Seiko 7119-577
• Seiko 6617-863
• Seiko 3830-918
• Seiko 3818-243
• Seiko 4519-339
• Seiko 3839-299
• Seiko 4444-849